[SIZE="5"][SIZE="6"]DISCLIAMER:THIS DOWNGRADE FLASHES YOUR PSP, SO THERE IS A TINY CHANCE OF BRICKING, FOLLOW THE INSTRUCTIONS BELOW AND YOU WILL BE FINE, MOTHERBOARD DOESNT MATTER AS THE INSTALLING WILL ASK YOU TO PATCH.

Ok then. Make sure your PSP is on Firmware 3.03. If it isn't, then you can get a 3.03 update eboot from HERE

To install it you need to make a folder called 'UPDATE' inside the 'GAME' folder, and then place the downloaded file into 'UPDATE'. It should look like this :/PSP/GAME/UPDATE/EBOOT.pbp

You also need an unpatched version of GTA:LCS. The unpatched version has an update to fw2.00. Only use a fw2.00. To check if you have the right one just insert the UMD and see what comes up on the XMB under GAME.